I've gotten all the way through Prince of Persia, I was able to get all but two and of course the DLC achievements. I do not have the DLC. The two I am lacking are the combo ones. they are a pain in the ass indeed. I tried for several hour this morning and figured I would try another game. So I am trying The Golden Compass. Honestly Io find it rather boring and slow moving. May have to be one I come back to from time to time to get the Achievements on them.